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Martin Marietta Materials Inc safety activity

MSHA violations, accident reports and inspections across the current mine portfolio.

2025-01-01 – 2026-10-31Database snapshot · 2026-10-31

Safety activity

  1. Regular Safety and Health Inspection

    inspectionRecord F007155
    Greenback Quarry · 4002488

    12.5 on-site hours reported

  2. Regular Safety and Health Inspection

    inspectionRecord 6937685
    Medina Rock & Rail · 4105170

    28.5 on-site hours reported

  3. Fire

    accidentRecord 220250830015
    CAYCE QUARRY · 3800016

    Accident only

    Accident narrative

    Arsonist suspected of setting fire that expanded onto quarry property. 911 called. Fire was confirmed to be on quarry property and 800 number was called. Local responding agencies contained and extinguished the fire. They confirmed they were seeking an arson suspect.

  4. Regular Safety and Health Inspection

    inspectionRecord 6973949
    Warrenton Quarry · 0900580

    14.3 on-site hours reported

  5. Regular Safety and Health Inspection

    inspectionRecord 7040990
    Astec Portable · 1401807

    2.0 on-site hours reported

  6. Regular Safety and Health Inspection

    inspectionRecord 7101995
    North Valley Sand · 2501271

    5.0 on-site hours reported

  7. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F0153FD
    ARROWOOD · 3100059

    3.5 on-site hours reported

  8. Regular Safety and Health Inspection

    inspectionRecord F008790
    New Miami Plant · 3304383

    8.0 on-site hours reported

  9. Housekeeping.

    violationRecord 9759629
    Warrenton Quarry · 0900580

    30 CFR 56.20003(a) · Significant and substantial (S&S) · $336.00 proposed penalty

  10. Testing grounding systems.

    violationRecord 9699350
    DSM Portable Sand · 1302504

    30 CFR 56.12028 · $151.00 proposed penalty

  11. First-aid materials.

    violationRecord 5040088
    North Valley Sand · 2501271

    30 CFR 56.15001 · $151.00 proposed penalty

  12. Regular Safety and Health Inspection

    inspectionRecord F01638D
    DOUGLAS PLANT · 0200022

    2.0 on-site hours reported

  13. Regular Safety and Health Inspection

    inspectionRecord 6967188
    Irwindale Aggregates · 0401838

    13.0 on-site hours reported

  14. Regular Safety and Health Inspection

    inspectionRecord F012C58
    Junction City Quarry · 0901029

    12.5 on-site hours reported

  15. Regular Safety and Health Inspection

    inspectionRecord F010521
    Belmont Sand & Gravel · 1201911

    6.5 on-site hours reported

  16. Regular Safety and Health Inspection

    inspectionRecord F00A5AC
    DSM Portable Sand · 1302504

    7.8 on-site hours reported

  17. Regular Safety and Health Inspection

    inspectionRecord F027F12
    Snyder · 3401651

    12.8 on-site hours reported

  18. Securing gas cylinders.

    violationRecord 9892554
    Irwindale Aggregates · 0401838

    30 CFR 56.16005 · $151.00 proposed penalty

  19. Safety defects; examination, correction and records.

    violationRecord 9827732
    Junction City Quarry · 0901029

    30 CFR 56.14100(b) · $151.00 proposed penalty

  20. Insulation and fittings for power wires and cables.

    violationRecord 9787542
    Belmont Sand & Gravel · 1201911

    30 CFR 56.12008 · $193.00 proposed penalty

  21. General requirements.

    violationRecord 9787541
    Belmont Sand & Gravel · 1201911

    30 CFR 56.4200(b)(2) · $151.00 proposed penalty

  22. Brakes.

    violationRecord 9699349
    DSM Portable Sand · 1302504

    30 CFR 56.14101(a)(2) · $193.00 proposed penalty

  23. Safety defects; examination, correction and records.

    violationRecord 9699348
    DSM Portable Sand · 1302504

    30 CFR 56.14100(c) · Significant and substantial (S&S) · $959.00 proposed penalty

  24. Roll-over protective structures (ROPS) and seat belts.

    violationRecord 5040611
    DuBois Quarry · 2501046

    30 CFR 56.14130(e)(1) · $151.00 proposed penalty

  25. Identification of power switches.

    violationRecord 5040610
    DuBois Quarry · 2501046

    30 CFR 56.12018 · $151.00 proposed penalty

Sources and definitions

MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).

Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.

Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.

Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.

Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.

S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.

Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.

Portfolio totals use current mine membership, including events before the current owner or operator's tenure.